1//===- WebAssemblyInstrControl.td-WebAssembly control-flow ------*- tablegen -*-
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9///
10/// \file
11/// \brief WebAssembly control-flow code-gen constructs.
12///
13//===----------------------------------------------------------------------===//
14
15/*
16 * TODO(jfb): Add the following.
17 *
18 * block: a fixed-length sequence of statements
19 * if: if statement
20 * do_while: do while statement, basically a loop with a conditional branch
21 * forever: infinite loop statement (like while (1)), basically an unconditional
22 *          branch (back to the top of the loop)
23 * continue: continue to start of nested loop
24 * break: break to end from nested loop or block
25 * switch: switch statement with fallthrough
26 */
27
28multiclass RETURN<WebAssemblyRegClass vt> {
29  def RETURN_#vt : I<(outs), (ins vt:$val), [(WebAssemblyreturn vt:$val)]>;
30}
31let isReturn = 1, isTerminator = 1, hasCtrlDep = 1, isBarrier = 1 in {
32  defm : RETURN<Int32>;
33  defm : RETURN<Int64>;
34  defm : RETURN<Float32>;
35  defm : RETURN<Float64>;
36  def RETURN_VOID : I<(outs), (ins), [(WebAssemblyreturn)]>;
37} // isReturn = 1, isTerminator = 1, hasCtrlDep = 1, isBarrier = 1
38